Subject	My fuel pressure drops but it doesn't affect idle. Based
Posted by	treese88 on October 05, 2011 at 11:12 AM
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In Reply To	Re: Wandering AFR at idle and hesitation under WOT. posted by WazTTed on October 04, 2011 at 03:58 PM
Message	on the fact that your system just recently started dropping pressure it is probably related. Clamp off just after the fuel filter/before pressure sensor. Then clamp off the return line. Leave it over night. If pressure still drops then your fuel leak is either injectors, regulator, or dampener. Otherwise the system can lose pressure at the pump which doesn't really affect anything. Good luck. '91 TT
Follow Ups	Wandering AFR at idle and hesitation under WOT. - Wright (Ca) 20:50:41 10/03/11 check the MAFS signal voltage (n/m) - sandmanz32 21:09:45 10/03/11 Re: Wandering AFR at idle and hesitation under WOT. - sandmanz32 21:12:56 10/03/11 I have selin elbows but use a apexi neo to average the - Wright (Ca) 21:52:00 10/03/11 Cloosed loop or open at idle? (n/m) - Wright (Ca) 08:25:40 10/04/11 open loop at idle (n/m) - sandmanz32 18:27:39 10/04/11 So I left the fuel pressure gauge hooked up over - Wright (Ca) 09:05:19 10/04/11 Are you using a stock or aftermarket regulator? (n/m) - Woody75 (Denver) 09:01:19 10/05/11 Stock. I installed new reg/dampener/filter a few thousand - Wright (Ca) 10:55:54 10/05/11 Re: Wandering AFR at idle and hesitation under WOT. - WazTTed 15:58:32 10/04/11 Thanks. I did this test years ago and thought I remembered - Wright (Ca) 16:07:34 10/04/11 yea, i second that. get your fuel leak buttoned down - sandmanz32 17:49:21 10/04/11 My fuel pressure drops but it doesn't affect idle. Based - treese88 11:12:36 10/05/11 What do you use to clamp the line off with? Seems - Wright (Ca) 11:48:18 10/05/11 Vice grips with quarters on the clamping part to create a - treese88 09:06:04 10/06/11
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